Mechanical movement



L L. E W 0. P. B B

' MECHANICAL MOVEMENT.

No. 265,632. Patezited Oct. 10, 1882.

WITNESSES ATTORNEYS.

UNITED STATES.

PATENT OFFICE,

' BENJAMIN B. POWELL, OF PETOSKEY, MICHIGAN.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 265,632, dated October10, 1882.

Application filed March 15, 1882.

ical movements used to convert rectilinear reciprocating motion intocontinuous rotary motion; and it consists of a segmental cog-wheelhaving a regular series of epicyeloidal teeth with a large tooth and anotch at each end of the series; also, in two racks arranged parallelwith each other and connected rigidly by end pieces and adapted toengage the segmental cog-wheel in alternation.

Referring to the drawing, A is a segmental cog-wheel, mounted on theshaft B, and having a series, D, of epicycloidal teeth covering aboutone-third of its periphery. At opposite ends of this series of teeththere are spaces a a double the width of the spaces between the teeth ofthe series D, and adjoining these spaces there are teeth I) b of doublethe size of the teeth of the series D. Beyond and adjoining the largeteeth I) I) there are plain spaces 0 0, beyond which there are notchcsdd.

The racks E E are arranged with -their toothed sides facing each other,and their ends are. connected by the curved end pieces,-F Gr, one ofwhich is secured to the piston-rod of an engine or other reciprocatingbody, the other being connected with a guide-rod. Each rack is acounterpart of the segmental gear of the Wheel A, the teeth H Hcorresponding with the teeth D of the wheel A,the large teeth 0 efitting the spaces a a, the spaces f f receiv- (No model.)

ing the large teethb b, and the notches d (1 'receiviiwthe lu s r.Thedouble rack is re ls s QJ l resented in the drawing as having n'earlycompleted its stroke in the direction indicated by the arrow 1, movingthe wheel A in the direction shown by arrow 2. the lug g with theshoulder formed by the notch d completes the half-revolution of thewheel A and brings the large tooth 1) into engagement with the largetooth c of the rack E when the motion of the double rack is to bereversed, so that it will move in the direction of arrow 3. The tooth bof the wheel A will then be engaged by the tooth e of the rack E, andthe teeth D will follow, being engaged by the teeth H of the rack E. Atthe opposite end of the double rack the same operation is repeated. 7

It will be observed that in this mechanical movement there are nodead-centers, the reciprocation of the rack in either direction and inany position relative to the segmental gearwheel producing rotary motionin the wheel.

Having thus described myinvention, I claim as new and desire to secureby Letters Patent In a mechanical movement, a segmental wheel having atopposite ends of a series of epicycloidal teeth large spaces an, largeteeth I) 1), plain surfaces 0 c, and notches old, in combination with adouble rack having correspond i'ng teeth and spaces, and lugs g g,substantially as herein specified.

BENJAMIN B. POWELL.

Vitnesses:

W. E. WALLAon, S, H. WALLIS.

The engagement ot"

